Razor-sharpening machine.



No. 769,115. PATENTED AUG. 30, 1904.

A. W; SGHE'UBER. RAZOR SHARPENING MACHINE.

APPLIOATION FILED NOV 12,1303.

N0 MODEL. 2 SHEETS-SHEET 1.

' @M/MQR LFM f B91265 Jdtozvzq f PATENTED AUG. 30,1904. A. W. SGHEUBER.

' RAZOR SHARPBNING MACHINE.

, APPLICATION TILED NOV. 12, 1903.

2 SHEETS-SHEET 2 NO MODEL.

Inventor. M TM il z'ti zesses:

UNITED STATES Patented August 30, 1904.

PATENT OFFICE.

AUGUST WILLIAM SCHEUBER, OF HOBOKEN, NEW JERSEY, ASSIGNOR TO HIMSELF,AND JEREMIAH REIOHARD, OF CALDWELL, NEW JERSEY, DOING BUSINESS ASREICHARD & SCHEUBER MANUFACTURING COM- PANY, A FIRM.

SPECIFICATION forming part of Letters Patent No. 769,115, dated August30, 1904.

RAZQR-SHARPENING MACHINE.

Application filed November 12, 1903. Serial No. 180,914. (No model.)

To all whom it-mlay concern:

Be it known that I, AUGUST WILLIAM Sermo- BER, a citizen of the UnitedStates, residing at Hoboken, in the county of Hudson and State of NewJersey, have invented certain new and useful Improvements in RazorSharpening Machines, of which the following is a full,

' clear, and exact specification.

My inv ention' relates to machines for sharp sharpening-surface withsufiicient pressure to properly perform the sharpening operatlon,

that the whole length or edge of the blade is equally and uniformlyforced into contactwith the sharpening-surface, that the blade is 2 5quickly and easily inserted into and withdrawn from the blade-holder,and other advantages flowing from my improved construction areherelnafter pointed out or w1ll be found 1n use.

In the accompanying drawings I have shown 3 a characteristic embodimentof the several features of my invention, and they disclose a veryefficient and satisfactory machine. It is obvious, however, thatmyinvention may be utilized in many other ways than in the specific formshown in the drawings, and I do not intend to limit myself in any wisethereto.

In the drawings, Figure 1 shows a plan view of the sharpening-machinecomplete; Fig. 2,

a side sectional view; Fig. 3, an end view of 4 the machine looking fromleft to right in Fig. 1, and Fig. 4 shows a sectional view of thereversing mechanism. Figs. 5 and 6 are similar views to Fig. 3, but showthe parts in different positions assumed during the stropping operation.Fig. 7 is a similar view to Fig. 3,

but shows a-modified form of a spring for returning the parts to anormal position. Fig.

8 is an enlarged view of the blade-holder,

partly in section for the sake of clearness; and

plate is rigidly mounted a stud 3, upon which is journaled theblade-holder 4:, free to revolve, as will be hereinafter more fullydescribed. Additional fixed spindles 5 5 are also secured to said plate,and upon these spindles are mounted to revolve in the usual manner thefriction-rollers 6 6,the latter being held in place .by washers 7 7', aswill be readily understood,

and these rollers are provided with depending arms 8 8, securedthereto-and which rotate therewith. A rack 9, pivoted to the support ata suitable point 10, is adapted to. rock back and forth and engages apinion 11, rigidly secured to and which rotates with the blade-holder.Links 12 connect the rack aforesaid with the arms 8 8 on the frictiondevices and in conjunction therewith serve to turn the blade-holder intooperative position when the friction-rollers are rotated by being movedover the sharpening-surface.

It will be obvious that in the normal position (shown in Figs. 3 and 4.)theblade-holder is upright and the rack substantially vertical over itspivot. Upon placing the friction-rollers in contact with astropping-surface, such as 13, (see Fig.

5,) and moving the machine in the direction of the larger arrow in thisfigure the rollers are rotated as indicated and thus by means of thelinks 12 force the rack to the left, rotating the pinion andblade-holder and forcing the edge of the blade into contact with thesharpening-surface. It will likewise be seen that the arms 8 and, links12 form toggle-joint connections between the rollers and rack, and thusas the rollers are rotated and the blade made to approach'thesharpening-surface the amount of movement of the blade is gradr uallydecreased, but the pressure thereon grade ually increased. Thisconstruction I have found particularly effective for the followingreasons: The blade-holder moves with considerable speed when passing theupright position, and thus the reversal of position is obtained veryquickly and without the expenditure of very great power. At the sametime, however, as the edge of the blade approaches thesharpening-surface it is gradually slowed up, and thus violent contacttherewith is avoided. In addition the pressure on the blade isconcurrently increased and reaches its maximum when neededthat is, at orabout the time of contact. It will be readily understood that astructure employing this feature of my invention may be constructedwherein other kinds of friction devices are employed from that shownherein. It is also obvious that a single roller might be used withoutdeparting from the spirit of my invention, and I do not intend to limitmyself to a doubleroller machine.

An important advantage of my invention heretofore pointed out is thatthe blade when inserted in the blade-holder presses evenly against thestropping-surface, even though the parts may not be absolutely true, andthe regular wearing away of the blade and the successful sharpeningthereof are thereby facilitated. To accomplish this, I have provided abladeholder,which is sufficiently wide at the bottom to prevent theblade from being gripped thereby with the gripping devices shown,consisting of a single pair of jaws 14, so arranged as to grasp theblade at a point about midway between its edge and back and aboutequally distant from each end. These jaws hold the blade firmly in theblade-holder, but permit it to oscillate slightly, as about a pivot, andthus allow the edge of the blade to adjust itself as it passes over thesharpening-surface. In Fig. 9 it will be seen that the blade-holder isat a slight angle to the plane of the sharpening-surface; but the bladewhile firmly held in the blade-holder tilts itself sufficiently to allowits edge to conform to the plane of the stropping-surface. Seriousdifficulty has also been found in providing a sharpening device with ablade-holder wherein the material of which the blade-holder is made isof sufficient strength to withstand hard usage and at the same timepermit the grippingjaws to be made sufficiently flexible. Variousattempts have been made to this end; but I have found that my presentblade holder, which is provided with gripping-jaws containing one ormore perforations l5, permits the use of sufficiently heavy material forthe blade-holder and at the same time allows sufficient flexibility ofthe jaws to permit the ready insertion and withdrawal of the blade,nevertheless holding it at all times in firm position. In some instancesit may be desirable to provide my present stropping-maehine with aspring for returning the blade-holder to its normal position, and if soa spring 16 may be mounted in the frame so as to bear againstprojections on the rack 9 to return it to an upright position. A springsuch as is shown in Fig. 7 may likewise be used, wherein a coilspring ismounted to revolve with the pinion 11 and its ends brought into contactwith opposite sides of the spindle 10.

It is obvious that many modifications and changes may be made in myinvention from the particular structure shown and described; but

What I claim, and desire to secure by Letters Patent, is

1. In a razor-sharpening machine, a suitable support, a movableblade-holder and friction device mounted upon said support, and atoggle-joint connection between said blade-holder and friction devicefor operating said bladeholder, substantially as described.

2. In a razor-sharpeningmachine,a suitable support, a movableblade-holder and friction device mounted upon said support, atogglejoint connection between said blade-holder and friction device foroperating said bladeholder, and means for returning the bladeholder to anormal position, substantiall as described.

3. In arazor-sharpeningmachine, a suitable support, a movableblade-holder and friction device mounted upon said support, and atoggle-joint connection between said blade-holder and friction device,whereby the power applied to the blade-holder is increased as the bladeapproaches the sharpening-surface, and means for returning theblade-holder to its normal position, substantially as described.

4. In a razor-sharpeningmachine, a suitable support, a movableblade-holder and frictionrollers mounted upon said support, and meansconnecting said blade-holder and friction-rollers whereby the powerapplied to the bladeholder is increased as the blade ap 'n'oaches thesharpening-surface, substantially as described.

5. In a razor-sharpening machine, a suitable support, a movableblade-holder and frictionrollers mounted upon said support, meansconnecting said blade-holder and friction-rollers whereby the powerapplied to the blade-hold or is increased as the blade approaches thesharpening-surface, and means for returning the blade-holder to itsnormal position, substantially as described.

6. In a razor-sharpening machine, a suitable support, a movableblade-holder and frictionrollers mounted upon said support, andtogglejoint connections between said blzule-holder and friction-rollersfor operating the bladeholder, substantially as described.

7 In a razor-sharpening machine, a suitable support, a movableblade-holder and frictionrollers mounted upon said support, togglejointconnections between said blzule-holder and friction-rollers foroperating the bladeholder and means for returning the blade- 8. In arazor-sharpening machine, a suitable support, a movable blade-holder andfrictionrollers mounted on said support, toggle-joint connectionsbetween said blade-holder and friction-rollers whereby the power appliedto the blade-holder is increased as the blade approaches thesharpening-surface, and means for returning the blade-holder to itsnormal position, substantially asdeScribed.

9. In a razor-sharpening machine, a suitable support, a movableblade-holder and frictionrollers mounted on said support, and meanscomprising a movable rack, and toggle-joint connections between saidblade .-'holder and friction-rollers whereby the power applied to theblade-holder is increased as the blade ap proaches thesharpening-surface,substantially.

as described. p 10. In a razor-sharpening machine, a suitable support, amovable blade-holder and fric-., tion-rollers mounted on said support,means comprising a suitable rack,and toggle-joint connections betweensaid blade-holder and friction-rollers whereby the power'applied to theblade-holder is increased'as the blade approaches thesharpening-surface, and means for returning the blade-holder to itsnormal position, substantially as described.

11. In a razor-sharpening machine, a suit able support, a movableblade-holder and friction-rollers mounted on said support, a rnovablerack,links connecting said friction-rollers and sa1d rack and meansconnecting sa1d rack.

with said blade-holder, substantially as described.

12. In a razor-sharpening machine, a suitable support, a movableblade-holder and friction-rollers mounted on said support, amovablerack, links connecting said friction-rollers with said rack and meansconnecting said rack with said blade-holder whereby the power ap pliedto the. blade-holder is increased as the blade approaches thesharpening-surface, substantially as described.

18. In a razor-sharpening machine, a suitable support, a movableblade-holder andfrica tionrollers mounted u pon said support, a movablerack, links connectlng sa1d frlctlon-rollers and sa1d rack, meansconnectmg sa1d rack with said bladeholder, and means for returning,

the blade-holder to its normal position, sub- 14. Ina razor-sharpeningmachine, a suitable sup port,.a movable blade-holder andfriction-rollers mounted upon said support, a movable rack, linksconnecting said friction-rollers and said rack, means connecting saidrack with said blade-holder, whereby the power applied to theblade-holder is increased as the blade approaches thesharpening-surface, and means for returning the blade to its normalposition, substantially as described. 7

. 15. In a razor-sharpening machine, a suitable support, a movableblade-holder and friction-rollers mounted upon said support, a pivotedrack, links connecting said rack andlugs on said friction-rollers, andmeans connecting said rack and said blade-holder, substantially asdescribed.

16. In a razor-sharpening machine, a suitable support, a movableblade-holder and fric: tion-rollers mounted-upon said support, a pivotedrack, links connecting said rack and lugs on said friction-rollers,means connecting said rack and said blade-holder, and means forreturning the blade-holder to its normal position, substantially asdescribed.

17.. A blade-holder for a razor-sharpening machine provided with meanswhereby the blade automatically adjusts itself to bear against thestrop, substantially as described.

18. A blade-holder for a razor-sharpening machine having devices forgripping the blade at a single point to permit the self-adjustment ofthe same, substantially as described.

19. A blade-holder for a razor-sharpening machine havingcentrally-disposed grippingmachine, having a, plurality of perforatedgripping devices for holding the blade, said devices being so arrangedas to permit the self-adjustment of the blade, substantiallyasdescribed.

22. A blade-holder for a razor-sharpening machine, having a pair ofcentrally-disposed perforated gripping devices for holding thev blade,said devices being so arranged as to permit the self-adjustment of theblade, substantially as described. 23. In a razor-sharpening machineemploying friction devices, means for oscillating the blade-holdercomprising arms connected to said friction devices and operated thereby,which arms are in their normal position, arranged in aconvergingrelation to each other, substantially as described.

2 1. In a razor-sharpening machine, a support carryinga blade-holder,suitable friction devices arranged to rock said blade-holder andconnections between said friction devices and said blade-holdercomprising arms, links and a rack and pinion, substantially asdescribed.

In testimony whereof I hereunto set my

